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Product Warranty Costs (Tables)
 6 Months Ended
Feb. 28, 2015
Guarantees [Abstract]  
Schedule of Product Warranty Liability
The following is a rollforward of the product warranty reserve (in thousands):
 
Six Months Ended February 28,
 
2015
 
2014
Beginning balance
$
4,056

 
$
7,413

Provision for warranties
2,837

 
1,208

Warranty payments and costs incurred
(2,418
)
 
(3,079
)
Impact of changes in foreign currency rates
(231
)
 
63

Ending balance
$
4,244

 
$
5,605